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Dimensions for Type 4964
4964型设计用于要求高灵敏度次声传声器的高精度声学测量。经过预极化，4964型可与CCLD和经典的前置放大器一起使用。
使用场景
- 一般噪声测量
- 风力发电机测量
- 声爆测量
- Capacitance
- 14 pF
- Diameter
- 0.52
- Dyn. range
- 14.6 – 146 dB
- Freq. range
- .02 – 20000 Hz
- Inherent noise
- 14.2 dB A
- Lower limiting frequency -3dB
- 0.02 Hz
- Optimised
- Free field
- Polarization
- Prepolarized
- Polarization voltages
- 0 V
- Pressure coefficient
- -0.01 dB/kPa
- Sensitivity
- 50 mV/Pa
- Standards
- IEC 61094-4 WS2F
- Temperature coefficient
- -0.006 dB/ºC
- Temperature range
- -30 – 150 ℃
- Venting
- Rear
- Weight
- gram
- Sound field
- Free-field
- Input type
- CCLD IEPE
- Microphone type
- Free field
